Home / 74,864.38-103,313-40,872.88

Finding the Fourth Proportional to 74,864.38, 103,313 and 40,872.88

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Solution

The fourth proportional to 74,864.38, 103,313 and 40,872.88 is: 56,404.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,864.38 : 103,313 = 40,872.88 : x
  2. Step 2: Convert to fraction form
    74,864.38/103,313 = 40,872.88/x
  3. Step 3: Cross multiply
    74,864.38x = 103,313 × 40,872.88
  4. Step 4: Simplify right side
    74,864.38x = 4,222,699,851.44
  5. Step 5: Solve for x
    x = 4,222,699,851.44/74,864.38
  6. Step 6: Final answer
    x = 56,404.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.